Magazine pencil



Jan. 24, 1928.

` A. F. BUMPUS MAGAZINE PENCIL4 Filed Jan. 22. 1927 umus Patented dan. 2.4, 1928.

llhll'lED S'lATES latS'ZJOT i `litros r. Belarus, or" rnnscorr, Anrzo'na.

Maorizrnn rnncijn 'Application :filed January i927.` Serial No. 162,829.

rl'his invention relates to pencils and particularly to pencils carrying relatively long leads, means vbeing provided whereby the leads may be shifted through `the pencil as theleads are worn.

The general object ot tion is to provide a very simple and readily operable pencil ot this character made of relatively 'few parts which cannot get out or' order and whereby the lead may be positively Vprojei'zted whenever desired.

A further object isV to provide a pencil ol this character having a magazine whereby the leads may be carried. Y

Hy invention is illustrated inthe accompanying drawings wherein -f Figure 1 is a longitudinal sectional view of` a pencil constructed in. accordance with my invention Fig. 2 is an elevation of therlead guide; Fig. 3 is an end view 0i` the lead guide; Fig. 4 is an end view of the eXpeller; Fig. 5 is an end elevation of the thiinble; Fig. 6 is an elevation thereof; i Fig. an elevation ot the grooved tube; Fig. 8 is an elevation oit the magazine; YFig. 9 is an end view thereof; liigure l() is a sectional View illustrating a modified 'l'orm of the magazine. K Referring to these drawings it will be seen that the pencil consists oit' a cent-ral, longitudinally slotted, lead guide `10. Disposed within this lead guide is the expeller 11 which lits the bore ot the lead guide and which at its rear end is convoluted so as to il'orm a plurality oit iins 12 to extend through the longitudinal `slot 13 ot the guide 10. The forward end ot' the lead guide 10 is slightly contracted as at 14, and its forward end extends through a thimble 15 which has an enlarged rear end 16 and a relatively contracted forward end 17 which snugly tits the lead guide and is formed with a lug 18 which fits the slot of the lead guide. Disposed over the forward end of the lead guide and over this thimble 15 is a barrel 19 which has formed integrally with it the tapering tip 20. rThis tip may be held to the flanged end 16 of the thimble by indenting the barrel at interif'alsu as at 21, and correspondingly indenting the flange 16 so that thus the thimble and the barrel are held to each other for simultaneous rotation.

Surrounding the lead guide l0 is a spirally grooved tube 22 which fits within the thimole the present inven-` zine.

l5 and this tube at its forwardV end is oircuinierentially indented, as at 23, and the thimble is also correspondingly indented,

as at 24, so that the thimble and the spirally grooved tube will have rotative engagement with` each other but be held from relatively longitudinal movement. llhe rear end of this spirally `grooved tube is formed with an outwardly projecting i lug 25. `Disposed `within vthebarrel i9 is a tubular member 26 formed with a flange 2? at its forward end.

The exterior face of this member is longitudinally tinted, as at 28, so as to -form a y series of longitudinal compartments for the leads and constitute with the barrel a maga- The `inner wall of the upper `portion of the member constituting the magazine is longitudinally slotted,` as at4 29, for a dista-nce notv quite the full length of the magazine, andthe lug 25 operates in this slot. The unslotted port-lon ot the tubular member 26 prevents the` member from being pulled entirely 'oil' of the part 22.

Disposed within the eXtremi tubular :members 26`is the contracted end 30 `of an eraser holder 3l which is of a size to ty of` the snugly lit within thebarrel 19. The contracted end 8O ont' this eraserholder is held to the tubular members 26 by indentations 33 is disposed within an enclosingfeap 35 which is tapered and. thus the cap portion 35 may be turned outward `if desired and the cap 34 need not be used. ln thiszforin of i pencil, the lead will be ed Vor expelled outward by turning the eraser holder to the right. This, of course, will actto force the expeller longitudinally towards the point of n the pencil. A reverse movement of the eraser holder will cause the expeller to move rearward. and permitthe insertion of anew point. The tubular member 26 is preferably tapered towards its forward end so that when the member 2G is withdrawn, the leads willbe presented in a tlared or relatively divergent relation. lVhen a new lead is desired from the magazine, the eraser holder is pulled outward. This pulls the tubular member outward upon the spirally grooved member 26 and thus presents the leads where they can be conveniently secured.

Vl/'hile preferably the extremity of the lead guide Will be slitted and slightly `contracted so as to frictionally hold the lead from falling out, yet it may be desirable under some circumstances tolongitudinally slit the point or tapering end of the portion 20"w`vl1`ich will rictionally engage the lead and prevent its A d roppingout.

In Figure l0 I have illust ated a modified loi-in of magazine which differs from the magazine previously described only in that the corrngations or flutes 28 are :termed 1n tlie leads, permitting a better `Separation by `the ridges of the corrugationsjwhichisla valuable` feature in case of very thin' leads. Furthermore, this type of magazine ean be very readily manufactured and the corrnga-` tions would alto serve to strengthenthe Walls ol the barrel.`

`l1. A pencil of the character deeoribed ineludingr` a centrally disposed, longitudinally split lead guide, an expeller disposed within the lead guide and having a `tin extending. out `through the slot, a helically groovcd member surrounding` the lead guide and With the groove ofwhich: the `fin engages,- an outer barrel having atapered extremity formed with a bore aligning Withthe lead guide, `means for supporting the helically grooved niem'ber Within the barrel, and

means whereby the helically grooved mem-F berjmay be manually rotated, anda magi zine `disposed exteriorly of the helioally grooved member and having longitudinally extending llutes,`the magazine including "a lead holder adapted to be longitudinally i shifted with relationto the helically grooved member and the barrel to project the leads.

2i A `pencil of thel character desoribed including a centrally disposed, longitudinally` lsi gnature.

split lead guide, an expeller dieposed Withiii the lead guide and having a lin projeetingr out therefrom through the slit thereof, a helically grooved tubular member surround ing the lead guide and with the grooves in which the fin engages, a barrel having a tapered extremity, the extremity being bored to register With the lead guide, a thiinble disposed within the tapered end oi the barrel `and having an extended rear end engaged with the barrel and sappm'ting the lr'orward end of the lead guide, the helieally grooifed tubular member .having swiveleil engagement in said thimble,` a magazine diaposed over the lielioially grooved member and having;` rotative engagement therewith t but adapted to slide longitudinally thereon,

and alheadv disposed Within the barrel and engaged Withlthe magazine' for common ro tative movement and longitudinali more ment.

pencil ofthe character described inh eluding a longitudinally split lead guide, an

expeller operating therethrough and having the leadg'uide and with the groove of which the fin engages, an outer barrel liaviiigg a outer end ofthe magazine and by whieli the imigazineinay be rotated `or pulled out from the barrelrand a eap enjgaging over the head and closing the end of the barrel.

In testimony whereof' I hereunto affix infr A-Mos F. maires.

1o@ i a `fin projecting out throiigli `the slot, a` heli# y `cally grooved tabular member surrounding; 

